John w



(No Model.)

J. W. GROWS.

PLOATTRAP FOR WASH BASINS, &c.

No. 372,312. Patented Nov. 1, 1887.

UNITED STATES PATENT GEErcE.

JOHN W. snows, or NEW YORK, N. Y.

vFLOAT-TRA P- FOR WASH-BASINS, 86C.

SPECIFICATION forming part of Letters Patent No. 372,312, dated November 1, 1887,

Application filed March 22, 1886. Serial N0.196,115. (No model.)

To all whom t may concern.-

Beit known that l, JOHN WV. GROWS, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented new and useful Improve ments in Float-Traps for Vash-Basins, &c., of which the following is a specification. My invention relates to improvements in ioat-traps to prevent gases from the wastepipe entering the air of a room through the overliow-holes in a wash-basin.

The object of the invention is to provide additional improvements tothe invention for the same purpose, patented to me December 2l, 1880, No. 235,629.

The improvements consist in the combinay tion,with afloat-valve, of asmall airevalve operated simultaneously therewith, so as to balance the air-pressure and thereby make the lioat-valve operate easier; also, in the combination, with the il'oatlvalve and casing, of a guidewire to alwayskeep the float in proper position to resume its seat; also, an improved devicevfor fastening the valve casing to the wash bowl by the combination of a slotted casing and a washer witha fastening-screw attached eccentrically thereto; and, also, in the combiuatiomwith the inlet-opening and the valvecas'ing, of a wire screenV to prevent dirt fromv arising and clogging the valve-seat, all of which will be fully described,and specifically pointed out in the claims, reference being had to the accompanying drawings, in which- Figure l represents a horizontal section through the valve-casing and a portion of the wash-bowl to which it is attached. Fig. 2is a vertical section taken on the line x m of Fig. 1. Fig. 3 isaface View of the valve and valvecasing, seen in direction of arrow 1` of Fig. l. Fig. 4 is a similar view seenin the-direction ot' arrow 2 of Fig. 1,. Fig. 5 is a modification ofl the fastening-screw.

A designates a portion of the wash-basin, and a the holes through the same, through which the overliow runs down to the sewerpipe by way of the water seal or trap below.

B is the cap or valve-casing, whose flange b', tting the curvature of the wash-basin, is provided with packing to keep it air-tight to its 5o place.

Gis the vertical groove, U-shaped or semicircular in crosssection, in which the float4 valve c moves until at rest upon the seat d at the inner end of the inletopening D, as in my previous patent above referred to. The valveseat d may be hollow, conical, or spherical, as shown in Fig. 2, to receivea conical or spherical float-valve; or the upper edge of the Valveseat may be sharp or flat, as in Fig. 3, adapt ing it to suit a iiat valve as well as a globular one. The inlet is provided with a nipple, d', threaded on the outside to receive a cap, E, threaded correspondingly on the inside to t the said nipple, and the said cap is provided with a fiat or concave screen, e, whose object is to prevent dirt from entering and clogging l the valve-seat. Y

My experience has shown that when the water iows through the holes a downinto the waste-pipe the air in the said pipe, which is confined between the holes ci' and the upper surface of the water in the trap below, becomes compressed by the downflowing water, and, rising to the surface, acts upon the float-valve c, so as to press the same down upon its seat with sufficient force to counterbalance the little head of water which may be in the washbasin abovethe outlet D. To overcome this diflculty I have provided a small air-valve, F, to be opened by the rising of the float c, so as to let out a portion of the compressed air and equalize the air-pressure outside and inside of the easing B. This little valveF has a seat in the upper surface of the casing B, as

shown in Figs. 2 and 3, and a ne wire or rod, f, depends from the valve, and its iower end is either fastened to the valve c, as in Fig. 3,- or it is provided with a concavo-convex plate, f', which rests on the valve c. It is evident that in either case the rising of the valve c will lift the air-valve F with the effect desired.

vIn order to always keep the valve c in position within the cavity C, whether or not attached to a Wash-basin, I have provided the vertical guide K, secured to the upper and lower end of the casing, in position as shown in Figs. l and 2, the distance between said wire and the nearest adjacent edges of the cavity C being smaller than the diameter of the valve c, thus preventing the latter from getting out of place.

ICO

The device for securing the casing B to the y head.

waslrbasin I have improved and cheapened in the following manner, it having been found necessary t-o make the location of the fastening-screws adjustable, so as to correspond with the location of one or more of the holes a, by means of which the casing B is secured to the wash-bowl. For this purpose I provide the inner or front wall of the casing at either side of the cavity C with a horizontal slot, b, of sufficient length to enable the fastening-screw G, when inserted through one of the holes a, to project with its outer end through some portion of the said slot, and through a hole arranged eccentricall y in the washer H, said washer being provided inside with a packing, 7L, so as to cover the slot air-tight, and being large enough, whether the screw is passed through the centeror an end of the slot, (for instance, as shown in Fig. 4,) to cover the ends of the slot completely.

The construction ot'the fasteningscrew itself I have cheapened by dispensing with the ilanged and tapped shank, and the screw threaded in the same, as shown in my previous patent, and simply using a common bolt, the head of which I Iile off at one side, so that it may easily be entered through one of the holes a to engage (with the part of the screw-head not thus cut away) the outside of the washbowl, and retain such position by inserting at the opposite or eut-away side a small wooden wedge, I, as shown in Fig. 4. One screw, G, being thus attached in each of two opposite suitably-located holes, a, the casing B is simply placed upon them, so that the screws project through the slots b. The washers II are then applied, and all fastened in place tightly by the ordinary nut, g, on the ends ot' the screws G.

In Fig. 5 is shown a manner of constructing the screw or bolt G so as to obviate the use ot' the wedge I, and consists in making an axial slit longitudinallythrough a partof the screw, so that the integral parts at both sides of the slit will act as springs, and when closed together will lessen the diameter of the screw- The latter is then cut off inclined or wedge-shaped on one side, so that it may be fastened to the basin by forcing and thereby compressingit through one ofthe holes a,when passed through which itwill expand on the ontside of the wash-bowl and be held in substantially the same manner as the other screw, G.

Having thus described my invention, what I claim as new in connection with the overfiow of wash-basins, and desire to secure by Letters Patent, is

l. The combination, with the float-valve c, of an air-valve, F, and the rod f, supporting the said airvalve upon the said fioat-valve, for the purpose hereinbefore set forth.

2. The combination, with the float-valve c, ofthe air-valve F, provided withthe depending rodfand the plate f at the lower end of the said rod, substantially as specified.

The combination of a wash basin, A, having overiow-holes a, and with the casing B, provided with slots Z),and the bolt or screw G, having its head eut away at one side tlush with the shank and seeurable by the wedge I, and a washer, H, covering said slot and having holes through it to receive the threaded end ofthe bolt G, andthe nut g, tightened against the said washer, substantially as and for the purpose set forth.

et. In combination with the casing B, having slot I), and the basin A, having holes a., the washer H, provided with packing h, and the bolt G, inserted with its inner end through one ofthe said holes aand with its outer end through the said washer H, the latter being provided eccentrically with a hole to receive the outer end ofthe said bolt, substantially as and for the purpose set forth.

5. In combination with the casing B, having inlet D, with seat d, to receive the valve c and a projecting nipple, d', the cap E, provided with wire screen @,and adapted to be seeuredto the said nipple, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention Ihave signed my name, in presence of two witnesses, this 18th day of March, 1886.

JOHN \V. GROWS.

XVit n esscs:

A. W. ALMQvts'r, A. M. DANinLsoN. 

